1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda8fbf1cb655905a9ede7ff235b3391879b0eb84088b045eb3195722466747. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4036054-71ef-4d3b-802f-6a7f83752845.json and https://artists.proofprofile.net/proofs/artist/e4036054-71ef-4d3b-802f-6a7f83752845.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f3989db7d65c97922ec81b9e661a1216c782d72412ef49d19b4f5134713436. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad5fe3ed6500038d1d21626dab0ca6da18f83a747db1cad1e925471673eeb03. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d9b2e48da0129c23f8baa82372ca2b49f54d8b225f73bca546f9e1d3dfa1b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315def0c17343971072872f893217a3bc09bd4b8173b4dd65428d244d0513500. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fd7e7aa93de9bdee9f17bae545e1102383482e0146181ae97934a7b623ce95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb674d033c827b74abcf3a5dd1e64f6bc47f34c7ceb3f11bf42bbd4d7fa3c473e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18be31a580e78872336bc536a2313789f5011d6d1ee5efdd71eef43cbd1d3d4d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b431d8daca897fee304b39c553968043d4bc80396585050918c53dd87e9dac4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6220c41e9d20e485b3ac5d45a6a79e0289ab95bdd6893882ef87b1ccc764e869. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba135a82d4ba0d13ae3ea0ac35a134ead83e2fdc6f0d09147e6f08ed7252a9d2. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:13:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65e9d480d0de8ae6cad574891504b0e4879533d628744253b697fd1c2319516. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141405d400516d73038697d8c16078114d9b63e7725fa0cf183a204f1d42510e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eae876dc91c5d4557f6c16efd9f87a9cc563db9f6ad1be8f3b600fba935c0d. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7fc357e6033592b59f38011fae24421aa20aed0c18cb0af4eda521ca380e4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMBR1712440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bbcba7baeb292677fd17abbfa35024593b70e8d9c9bf19a4ee8333c721e6f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF1599832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d730ebd8f2289c3af12812a59219f7326f378e2d4a6dd50514b6e347140f30b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF1599833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b355650bfe88e0968e2e30f52f217eca8758dd5836f7f91e9bf179f09d95ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF1599834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243fae9aebd5e3540a7c8fc5641719678d050605d78b004102d8784b1072dcde. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF1599841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd347bdd4d09eab9a6c4cf1c3d9e9351b27ede903e0b1e93637ff13069bdefab0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMLL31200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4229ffb5a38904c962fd6ad6e6f355fea8f602c0b79d68d76ba00d60c87d3633. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMLL31200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44334092bf3c0793a3823f8fad22537fb96bde461e066c07ba7de03723cfff26. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMLL31200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715cbfb6f3b3e9ecdf89af211216fdeca09d81aa28a200f80ab57017f6e7b934. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMLL31200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d9b2e48da0129c23f8baa82372ca2b49f54d8b225f73bca546f9e1d3dfa1b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fd7e7aa93de9bdee9f17bae545e1102383482e0146181ae97934a7b623ce95. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:48:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad5fe3ed6500038d1d21626dab0ca6da18f83a747db1cad1e925471673eeb03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf03d915561c4161dd93cee8f679a13d99286e388f35f38905c222be0153773. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315def0c17343971072872f893217a3bc09bd4b8173b4dd65428d244d0513500. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3af565467edb892eb6fd8b57f71393a39a9486e1a37bba89aae0fe098d7b46e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc061eaa2fc98ad8dad715e52b8f1565b839bce523e7c3567244f32b5ede002c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bcae8c02fc1d9dd3414bc64feebe6c9098b9dd6f77ce9a5eed7deb88bc0544. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0804713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66885fe4bd4c65036bfba92dba28fe478b8283f67804acf6b93de0fc5bc100fd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4e6a08889264bf516ac18b70488b14b5c068a48729d09ad2fc88bd6ae3932. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeef812e73a5e4334280b8a942c946c317996d0a64ed8220a705b1a6608112c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1b688faae96229f49cdaaa3037f6db076cc08f5554cb4739372d4780ffae5f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb674d033c827b74abcf3a5dd1e64f6bc47f34c7ceb3f11bf42bbd4d7fa3c473e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f3989db7d65c97922ec81b9e661a1216c782d72412ef49d19b4f5134713436. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18be31a580e78872336bc536a2313789f5011d6d1ee5efdd71eef43cbd1d3d4d. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:33:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14726d2731c0f4fcb88da255d3737504ed09bb88724fd446d0bddbeb93d707d4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82678369764f42080c90f2468d8f844a2a1057faf69b635e389409575ec14d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0502410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaad593ffe98d7810e00b66de8514eccf35f1435bfb810b94942e972ac82ce6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2234591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd52aed4924e6f76dccc9073b31039bcd66c1b48e14568a14572c2562bccdc0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2234690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62770bfd87a9c17a47e60da3dff6783451a7059143784058b33239e5137606ba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2234627.